text: How can you get more potassium? Potassium is in many foods, including vegetables, fruits, and milk products. You can figure out how much potassium is in a food by looking at the percent daily value section on the nutrition facts label. The food label assumes the daily value of potassium is 3,500 mg. So if one serving of a food has a daily value of 20% of potassium, that food has 700 mg of potassium in one serving. Potassium is not required to be listed on a food label, but it can be listed. Estimates of potassium in certain foods 2 3